Vulnerability Description
The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a denial of service (invalid pointer dereference) via crafted fragmented packets.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 2.6.38.8 |
References
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://www.openwall.com/lists/oss-security/2011/05/18/2
- https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecbExploitPatch
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://www.openwall.com/lists/oss-security/2011/05/18/2
- https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecbExploitPatch
FAQ
What is CVE-2011-1927?
CVE-2011-1927 is a vulnerability with a CVSS score of 5.0 (MEDIUM). The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a deni...
How severe is CVE-2011-1927?
CVE-2011-1927 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-1927?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.